Observatorio ARVAL

Astro Links


Contenido (Contents):


Use Ctrl-F (Find) para encontrar palabras en esta larga y frecuentemente actualizada página (cerca de 900 enlaces). Busque por "Castellano" para localizar las páginas en este idioma fuera del área de "Países".

Use Ctrl-F (Find) to find words in this frequently updated long page (some 900 links).

El Web está hecho de enlaces. Google los cuenta.
El rango de una página en el Web (en el Google Toolbar y Search) es directamente proporcional a esta cuenta.

The Web is made of links. Google counts them.
The rank of a Web page (in the Google Toolbar and Search) is directly proportional to this count.


Space Telescope Science Institute (STScI):
Space Telescope Science Institute Home Page
STScI Public Information Home Page
Amazing Space (Hubble Space Telescope's discoveries to inspire and educate about the wonders of our universe)
Digitized Sky Survey (MAST DSS)
Exploration In Education (ExInEd)
Faint Images of the Radio Sky at Twenty-centimeters (FIRST) (The VLA FIRST Survey)
Hubble Heritage Project (A photo album of some of Hubble Space Telescope's most stunning views of the universe)
HubbleSite (from the STScI Office of Public Outreach)
HubbleSite presents New Views of the Universe
Hubblesite - Explore Astronomy
 - Black Holes: Gravity's Relentless Pull - Introduction
HubbleSite - News Center
HubbleSite - News Release Archive
HubbleSite - Index of Press Releases: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Hubblesite - The James Webb Space Telescope
Hubblesite - Tonight's Sky (Monthly stargazing guide to constellations, planets, cosmic events and more)
HubbleSOURCE (Informal Science Education Resources)
Origins Education Forum (A scientific study of the long chain of events since the birth of the universe in the Big Bang)
Space Science Education Resource Directory

National Aeronautics and Space Administration (NASA):
National Aeronautics and Space Administration Home Page
Ames Research Center (con servicio de noticias en Castellano)
Aqua Satellite Project Science (Earth's water cycle)
Ask the Space Scientist (Dr. Sten Odenwald)
Asteroid and Comet Impact Hazards (David Morrison)
Astrobiology
Astrobiology Institute (NAI) (with e-mail news delivery service)
Astromaterials Research and Exploration Science (ARES)
Astronomy Picture of the Day (Each day a different image or photograph of our fascinating universe)
Astrophysics Data System (ADS) (Harvard-Smithsonian/NASA Digital Library for Astronomy, Astrophysics, and Physics)
Brain Bites (Educational Videos)
Breakthrough Propulsion Physics Program
Cassini-Huygens: Close Encounter with Saturn
Central America Monitoring and Visualization System (SIAM-SERVIR)
Ciencia@NASA (en Castellano, con servicio de noticias por e-mail)
Chandra X-Ray Observatory
Clickworkers (NASA Ames's experiment in volunteer science: Identifying craters on Mars)
CloudSat Mission
Computational & Information Sciences and Technology Office
Constellation (Ares and Orion new spacecraft)
COsmic Background Explorer (COBE) Mission (at Lawrence Berkeley Laboratory)
Cosmicopia (Cosmic and Heliospheric Learning Center, Cosmic Rays)
De Astrónomos a Astronaves (Astronomía, mecánica Newtoniana, el Sol, y vuelos espaciales, David P. Stern)
Deep Impact (Mission to impact Comet Tempel 1 in July 4 '05)
Discovery Program (Planetary science explorations)
Dryden Flight Research Center
Earth From Space (part of NASA's Space Shuttle Earth Observations Photography database)
Earth Observatory
Earth Observing System (EOS) (Project Science Office)
Earth Observing-1 (EO-1) (Advanced Land Imaging)
Earth Observing System (EOS) - Aura (Atmospheric Chemistry)
Earth Science Enterprise (Destination: Earth)
Epoxi Mission (Flyby of Comet Hartley 2 in 2010)
Exploration Systems (Glenn Research Center)
Fermi Gamma-ray Large Area Space Telescope (GLAST) (June 11, 2008)
Fourth Convection And Moisture EXperiment (CAMEX-4) (Marshall Space Center Hurricane Study)
From Stargazers to Starships (Astronomy, Newtonian mechanics, the Sun, and spaceflight, David P. Stern)
Galaxy Evolution Explorer (GALEX)
Gamma Ray Astrophysics at the NSSTC Burst and Transient Source Experiment (BATSE), GLAST Burst Monitor (GBM)
Goddard Institute for Space Studies (GISS) (Study of global climate change)
Goddard Space Flight Center (GSFC)
Global Hydrology and Climate Center (GHCC)
 - Lightning and Atmospheric Electricity at the GHCC
Gravity Probe B (The Relativity Mission)
Gravity Recovery And Climate Experiment (GRACE)
High Energy Astrophysics Science Archive Research Center (HEASARC)
High Energy Solar Spectroscopic Imager (HESSI)
History Division
Hubble Space Telescope Project
Human Space Flight (HSF) [NASA-TV, Shuttle, International Space Station (ISS)]
 - SkyWatch (Satellite Observation Java applet)
 - The Apollo Program History (Humans on the Moon)
Hurricane Web Page
Imager for Magnetopause-to-Aurora Global Exploration (IMAGE)
Intelligent Systems Division (Ames Reseach Center)
International Space Station (ISS)
Introduction to Cosmology (WMAP Website)
Institute for the Study of Biomarkers in Astromaterials (Astrobiology)
James Webb Space Telescope (June 2013)
Johnson Space Center (JSC) (Houston, Texas)
J-Pass - Satellite Passes [Java]
J-Track - Satellite Tracking [Java]
Kennedy Space Center (KSC)
Kepler Mission (A Search for Habitable Planets)
La Tierra, el Gran Imán - Sobre el Magneto, William Gilbert (David P. Stern, en Castellano)
Landsat 7 Home Page
Landsat Image Mosaic of Antarctica (LIMA)
Langley's LIDAR Applications Group
Lunar Crater Observation and Sensing Satellite (LCROSS) (Lunar South Pole impact on October 9, '09, 7:30 AM EST)
Lunar and Planetary Science at the NSSDC
Lunar Prospector
Lunar Research Institute (Dr. Alan Binder)
Mariner Mars Missions
Mars Exploration Program Landing Sites (Marsoweb interactive data maps)
Mars Reconnaissance Orbiter (MRO)
Marshall Space Flight Center
MESSENGER Mission (Mercury Surface, Space Environment, Geochemistry and Ranging)
Moderate Resolution Imaging Spectroradiometer (MODIS)
MODIS Rapid Response System
NASA Eclipse Web Site (Solar eclipse information)
NASA en Español (Java y Flash Macromedia)
NASA Image Exchange (NIX)
NASA/IPAC Extragalactic Database (NED)
NASA Learning Technologies (NLT)
NASA Missions
NASA Multimedia
NASA Quest (Interactive explorations, an educational Website)
NASA Technology Portal
National Space Science and Technology Center (NSSTC)
National Space Science Data Center (NSSDC)
 - NSSDC CD-ROM Catalog
 - NSSDC Photo Gallery
 - NSSDC Planetary Catalog of Spaceborne Imaging
New Horizons Mission (Pluto and Charon - Kuiper Belt Objects, 2006-2015-2020)
New Millennium Program (NMP)
Office of Education
Observatorium (Earth and space data)
Phoenix Mars Lander Mission (Underground water, 4 August 2007 - 25 May 2008)
Pioneer Mission
Polar, Wind, and Geotail Projects
Project Radio Jove (Amateur Jupiter Radio-Astronomy)
Robotic Lunar Exploration Program (RLE) [Lunar Reconnaissance Orbiter (LRO) Mission, 2008]
Science@NASA Headline News (with e-mail news delivery service)
Scientific Visualization Studio (SVS) (Goddard Space Flight Center)
Shuttle Press Kit (Shuttle mission information)
SkyView (The Internet's Virtual Telescope)
Solar and Heliographic Observatory (SOHO) (ESA & NASA)
SOLAR-B Mission (Exploring the magnetic fields of the Sun) [22 Sep. 2006]
Solar Data Analysis Center (SDAC) (Goddard Space Flight Center)
Solar Dynamics Observatory (SDO) [August 2008]
Solar Probe [First visit to the Sun, 2014]
Solar System Exploration
Solar Terrestrial Relations Observatory (STEREO) [18 Sep. 2006]
Space Place (Science, technology and learning about space for elementary school kids)
Space Place (Ciencia, tecnología y aprendizaje sobre el espacio para escolares. En Castellano)
Space Research (Office of Biological and Physical Research, OBPR)
Space Science (Science Mission Directorate)
Space Science Data System (SSDS)
Space Station Biological Research Project (SSBRP)
SpaceWeather.com (Science news and information about the Sun-Earth environment, Global satellite tracking)
Spitzer Space Telescope [Space Infrared Telescope Facility (SIRTF)] (con versión en Castellano)
Stratospheric Observatory for Infrared Astronomy (SOFIA) (NASA & DLR)
Sun-Earth Connection (Goddard Space Flight Center)
Suzaku Learning Center (Formerly Astro-E2)
Terra Satellite (Lands, oceans, and atmosphere Earth Observation System - EOS)
The Exploration of the Earth's Magnetosphere (David P. Stern and Mauricio Peredo)
The Great Magnet, the Earth, W. Gilbert (David P. Stern, English, Castellano, Française)
The New Mars - Mars 2004 (M2K4) (Multimedia)
THEMIS Mission Time History of Events and Macroscale Interactions during Substorms (Space Weather)
The Hubble Space Telescope
The Planetary Rings Node (of the JPL Planetary Data System)
The Rossi X-ray Timing Explorer (RXTE) Learning Center
The Swift Gamma-Ray Burst Mission
Total Ozone Mapping Spectrometer (TOMS)
Transition Region and Coronal Explorer (TRACE)
Transitsearch.org (Discover transiting extrasolar planets)
Tropical Rainfall Measuring Mission (TRMM)
Viking Mission to Mars
Visible Earth
Wallops Flight Facility
Wide-Field Infrared Survey Explorer (WISE)
Wilkinson Microwave Anisotropy Probe (WMAP) - Cosmology (Temperature differences in the cosmic microwave background radiation)
World Book @ NASA (Encyclopedia)

NASA - Jet Propulsion Laboratory (JPL):
Jet Propulsion Laboratory Home Page
2001 Mars Odyssey
 - Thermal Emission Imaging System (THEMIS)
Active Cavity Radiometer Irradiance Monitor (ACRIM) Satellite (Total Solar Irradiance measuring mission)
Airborne Synthetic Aperture Radar (AirSAR)
Amateur Astronomy
Asteroid Radar Research
Atmospheric Infrared Sounder (AIRS)
Cassini-Huygens Mission (Saturn and Titan)
Comet Observation Home Page (Charles S. Morris)
Comet Shoemaker-Levy 9 Collision with Jupiter (July 1994)
Dawn Mission (Ion Propulsion, Asteroids Ceres and Vesta, from September 2007 to July 2015)
Deep Space 1 (DS1) (Ion Propulsion and Advanced Technologies Demonstrator. Launched on October 24 '98, encounter with Comet Borrelly in Oct. '01, mission ended on Dec. 18 '01) (con versión en Castellano)
Deep Space Network (DSN) (Spacecraft Communications, Radio & Radar Astronomy)
Fundamental Physics in Space (Why Things Are The Way They Are)
Galileo Legacy Site (Jupiter)
Galileo Mission (Jupiter)
Genesis Mission (Solar Wind Sample Return)
JPL HORIZONS On-Line Solar System Data and Ephemeris Computation Service
 - Small-Body Database Browser (with Orbit Diagrams)
Keck Interferometer
Mars Exploration Program
Mars Exploration Rover Mission
Mars Global Surveyor Mission
 - Topography from the Mars Orbiter Laser Altimeter (MOLA)
Mars Meteorites Home Page
Mars Polar Lander Mission (all communication attempts ended on April 10 '00)
Mars Technology Program
Near-Earth Asteroid Tracking (NEAT)
Near-Earth Object Program (NEO) (Don Yeomans, Ron Baalke)
NEO Earth Close-Approach Tables
Ocean Surface Topography from Space (TOPEX/Poseidon and Jason)
OnEarth (Landsat 7, WMS Global Mosaic of the Earth Web Map Service)
Origins Program (Galaxies, stars, planets... and life)
Palomar Testbed Interferometer (PTI)
Physical Oceanography Distributed Active Archive Center (PO.DAAC) (Ocean Surface Topography, Ocean Vector Winds, Sea Surface Temperature)
Planetary Data System (PDS)
Planetary Photojournal (NASA's Image Access Home Page)
PlanetQuest: the Search for Another Earth (con versión en Castellano)
Programa de Exploración de Marte
Sea Winds on QuikSCAT Daily Wind Report
Shuttle Radar Topography Mission (SRTM)
SIM PlanetQuest (Space Interferometry Mission)
Solar System Dynamics (Information and Ephemeris for all known bodies in Solar orbit)
Solar System Simulator
Space Calendar (Space-related Activities, Ron Baalke)
Stardust Mission (Interstellar and Comet Wild 2 Dust Sample Return Mission. Feb 7, '99 - Jan 15 '06)
Terrestrial Planet Finder (TPF)
Tropical Rain Forest Information Center (TRFIC) (Bruce Chapman)
Ulysses Mission (Sun Orbiter)
Voyager Mission (Voyager 1 & 2: 1977-2020?)
Welcome to the Planets (PDS)
Winds Mission (Measuring Ocean Winds from Space)

National Oceanic and Atmospheric Administration (NOAA):
National Oceanic and Atmospheric Administration Home Page
Atlantic Oceanographic and Meteorological Laboratory (AOML) (with Hurricane FAQ)
Coastal Services Center
National Climatic Data Center (NCDC)
National Data Buoy Center
National Doppler Radar Sites
National Environmental Satellite, Data, and Information Service (NESDIS)
National Geophysical Data Center (NGDC)
National Hurricane Center - Tropical Prediction Center
National Polar-orbiting Operational Environmental Satellite System (NPOESS)
National Severe Storms Laboratory Norman, OK
National Weather Service (NWS) Home Page
National Weather Service (NWS) Internet Weather Source
National Weather Service (NWS) Space Weather Prediction Center
NOAA-CIRES Climate Diagnostics Center (CDC) (Climate Variability)
Operational Significant Event Imagery Server (OSEI)
Solar Position Calculator
Space Environment Center (SEC) (Solar Observations)
Sunrise-Sunset Calculation

European Space Agency (ESA):
European Space Agency Home Page
Darwin - Search for signs of life on Earth-like planets (2015)
Giotto - Mission to Comet Halley (02-Jul-1985 - 23-July-1992)
Hipparcos Space Astrometry Mission - Tycho Catalogues (08-Aug-1989 - Aug-1993)
Infrared Space Observatory (ISO)
Rosetta Mission - Comet 67P/Churyumov-Gerasimenko Explorer
Satellite Images (Observing the Earth)
SMART-1 Moon Mission (Ion Engine, September 27 2003 - September 6 2006)
Solar and Heliographic Observatory (SOHO) (ESA & NASA)
Venus Express

Students for the Exploration and Development of Space (SEDS):
SEDS Home Page
Bill Arnett's Web Sites (Site map for nineplanetes.org)
Herschel 400 list
Large Telescopes (Bill Arnett)
Messier Catalog (Hartmut Frommert)
More Astronomy and Space Links (Hartmut Frommert, Christine Kronberg)
Orbiting Astronomical Observatories (Hartmut Frommert)
Planetarium Software (Bill Arnett)
Spider's Homepage (Hartmut Frommert)
The Discovery of the Deep Sky Objects (Hartmut Frommert, Christine Kronberg)
The Interactive NGC Catalog Online (Hartmut Frommert)
The Nine Planets (Bill Arnett)
The Nine Planets For Kids

Astronomical World-Wide Web Indexes (Índices Astronómicos en el World-Wide Web):

Astro City (Índice temático de recursos sobre astronomía, en Castellano)
AstroFind (Search for Astronomy and Astrophysics)
Astronomy in Latin America (LANIC) (University of Texas at Austin)
Astronomy Links (Astronomy and Space Related Links from Around the World)
Astro Web Astronomical Internet Resources, AstroWeb Consortium
Open Directory Project: Top: Science: Astronomy
Open Directory Project: World: Español: Ciencia y tecnología: Astronomía (en Castellano)
Scirus (For Scientific Information Only)
search4science
The Info Service - Links to Astronomy Home Pages

Astronomy Equipment (Equipo Astronómico):

Information (Información):
About Daylight Saving Time (DST) (Web Exhibits: History, rationale, laws & dates)
Astronomy Notes (Astronomy, Introductory college-level course by Nick Strobel, Bakersfield College)
AutoStarSuite.Net (Your Source for Meade AutoStar, AutoStarSuite, LPI, and DSI information)
Calendars through the Ages (Web Exhibits: History)
 - De revolutionibus orbium coelestium (Nicholas Copernicus, 1543)
 - Dialogue Concerning the Two Chief World Systems (Galileo Galilei, 1632)
CalSKY - The Calculated Sky On-line Configurable Astronomical and Space Calendar
Ciencia@NASA (en Castellano, con servicio de noticias por e-mail)
Geonames Query Home Page (GNS) (Geographic Names Data: Coordinates)
Google Web Directory: Science > Astronomy
Google Mars (On-line Elevation, Visible and Infrared Maps of Mars)
GSC Magnetic Declination Calculator
Heavens-Above (Sky and Satellite Visibility)
International Meteor Organization (IMO) (Calendarios de Lluvias de Meteoros)
Project CLEA (Contemporary Laboratory Experiences in Astronomy)
Science@NASA (en Inglés, con servicio de noticias por e-mail)
Science and the Human Prospect (by Ronald C. Pine, Honolulu Community College)
SFA Star Charts (Mag. 5, PDF)
Sky & Telescope: How To - Astronomy Basics
Sky & Telescope: Observing Highlights
Sky & Telescope: Observing - Interactive Observing Tools
 - Sky & Telescope: Observing - Almanac v3.0
Sky & Telescope: Observing - Interactive Sky Chart
Skyhound (Greg Crinklaw, CapellaSoft)
SkyMaps.com (Free monthly sky maps and calendar)
SkyView (The Internet's Virtual Telescope)
StarDate Online - Your Guide to the Universe (McDonald Observatory, University of Texas)
The Astro Philes (Supplementary Resources for SJSU Astronomy Courses, Les Tomley, Sán José State University)
The Worlds of David Darling (Space & Science News)
 - The Internet Encyclopedia of Science
 - Encyclopedia of Renewable Energy and Sustainable Living
Timothy Ferris (Seeing in the Dark, The Whole Shebang, Coming of Age in the Milky Way)
Universo Online - Su Guía para el Universo (Observatorio McDonald de la Universidad de Texas, en Castellano)

Hardware:
Adirondack Astronomy The Astronomer's Source for Imaging
Anacortes Telescope & Wild Bird Astronomy, Photo & Video, Sport Optics, Books, Wild Bird Supplies
Astromart Astronomy classifieds, articles, reviews and more
Astronomics Telescopes and Telescope Accessories
Astronomy-Mall Products and Services
Binoculars.com Binoculars, Telescopes, Spotting Scopes
Bonney Lake Astro Works Milburn Quality Telescope Accessories
Celestron Telescopes, Microscopes, Binoculars and Accesories
Company Seven - Astro-Optics Division Telescopes and Accesories, Information
Coronado Instruments H-alpha filters for the Solar Observer
Cookbook CCD Camera Home Page (Richard Berry)
DayStar Filters (Ultra-narrow Bandpass filters)
Discovery Telescopes Dealers for Meade, Celestron, Tele Vue and Coronado
Edmund Scientifics Astroscan Telescope, etc.
Edmund Optics The World's Largest Inventory of Optical Components
Fishcamp Engineering Starfish Astro-camera/Auto-guider
Focus-Camera Digital and film cameras, telescopes, binoculars & electronics
ITE Telescopes (Jupiter, Florida. Consultant, Mike Palermiti)
Jim's Mobile, Inc. (JMI) Advanced Telescope Products
Kendrick Astro Instruments Dew heaters, solar telescopes, battery power packs, PortaBall telescopes
Losmandy Astronomical Products Precision Equatorial Mounts and Secondary Systems
MAG 1 Instruments PortaBall Telescopes
Magellan Corporation Consumer GPS Systems
Meade Instruments Corporation Telescopes, Microscopes, Meade Instruments
 - Meade Advanced Products Users Group (MAPUG)
Murnaghan Instruments Precision imaging systems, equipment and accessories
Oceanside Photo & Telescope (OPT) Astronomy Telescopes, Accessories, CCD and Digital Cameras
Omega AstroFilters Storefront (Amateur Astronomy Filters from the Supplier of the Hubble Space Telescope)
Orion Telescopes & Binoculars Telescopes, Binoculars and Accesories
PreciseParts Custom Parts for Astronomy. Your Online Astro Machine Shop
Rigel Systems QuikFinder Compact Reflex Sight and other accessories
Santa Barbara Instrument Group (SBIG) The Pioneering CCD Company
ScopeTronix The largest telescope dealer in the southeast
Scopestuff Telescope Accesories and Hardware
Supercircuits Inc. Americas CCTV, video security, cameras, security cameras and surviellance equipment
Teleport Telescopes The Telescoping Telescope
Telescopes.com Telescopes, binoculars and accesories
Tele Vue Optics Inc. Telescopes, eyepieces, accesories
Thousand Oaks Optical Solar, nebular and H-Alpha filters, solar eclipse viewers, dew heaters
Torus Optics Optics directory for telescopes, binoculars & more
Vixen Telescopes, Binoculars, Field Scopes, Microscopes, Compasses
William Optics USA Telescopes, Diagonals, Prisms, Eyepieces, Digital Camera Adapter Lenses, Accesories, Binoculars

Software:
Aberrator (Star-Test Image Simulator, Freeware, MS Windows)
Adobe Acrobat Reader (Freeware PDF format reader)
alcyone astronomical software (Free Planetary, Lunar, and Stellar Visibility calculator)
ASCOM Initiative (Interface Standards and astronomical instrument drivers)
Astroart Astronomical Images Processing and Analysis, by Fabio Cavicchio and Martino Nicolini. (MS Windows)
Astro Compass True compass, positions for Earth, Moon, Planets, Stars, by Piero Massimino, CAO. (Shareware, Palm OS)
+ Astro Compass es una excelente herramienta para el astrónomo amateur. Seleccionando y apuntando al Sol, Luna, un planeta, o estrella brillante, Astro Compass ayuda a localizarlo en el cielo, e indica hacia los puntos cardinales. Trabaja en sistema Alt-Azimutal o Ecuatorial.
+ Astro Compass is an excellent tool for the amateur astronomer. By selecting and pointing to the Sun, Moon, any naked-eye planet, or bright star, Astro Compass helps to locate it in the sky, and indicates the cardinal points. Works in the Alt-Azimuth or Ecuatorial systems.
AstroPlanner Astronomical Planning & Logging Software (MS Windows and Macintosh, with Free version)
Computer Aided Astronomy (C2A) Planetarium software, Freeware (MS Windows)
CapellaSoft (Sky Tools 2, PC-Sky, MS Windows, CD-ROM)
Cartes du Ciel - Sky Charts Free Astronomy software, Planetarium & Celestial atlas (MS Windows, Patrick Chevalley, English version, versión en Castellano)
Celestia (Free real-time space simulation for Windows, Linux, and Mac OS X)
Celestrak NORAD Two-Line Satellite Elements Sets. Freeware by Dr. TS Kelso.
Cielo e Terra "Sky Draw - Mappa del Cielo", "Earth Map - Mappa della Terra", "Eclipses & Earth - Eclisse e Terra", "Planetarium - Planetario", by Piero Massimino, CAO. (On-line Freeware, and MS Windows)
CyberSky Planetarium program (MS Windows)
DeepSky Astronomy Software, by Steve Tuma. (MS Windows CD)
Distant Suns Planetarium program, by Mike Smithwick, 4.4MB .zip download of v4 Demo. (MS Windows, CD-ROM, Adobe Acrobat, DirectX)
Deep Space Planetarium program, David Chandler Company. (MS DOS)
Google Earth (On-line Topographic Map of the Earth and Sky, Free)
Hallo northern sky (HNSKY) Planetarium program with 10,607 deepsky objects and all stars to magnitude 12, and with the original GSC CD-ROM's, GSC-ACT or the USNO to magnitude 15 or more. Displays all planets, the Moon, Sun, moons of Saturn and Jupiter, Mars, Uranus and Neptune and a few hunderd asteroids and comets. By Han Kleijn. Freeware (MS Windows)
Home Planet Comprehensive Astronomy Software Package. Freeware (John Walker, MS Windows)
InBloom Products - IBPTime Accurately synchronize your computer's clock with any of the dozens of NTP servers on the Internet. Freeware (MS Windows)
Intricate Micro Systems (Win245, CB245 Cookbook Camera Image Acquisition software)
Mars Previewer II Calcula las efemérides físicas de Marte y muestra una imagen realista del planeta. Calculates Mars physical ephemeris and draws a realistic image of the planet. Freeware by Leandro Ríos. (3 MB, MS Windows)
MyStars! (Relativedata Inc, MS Windows on-line planetarium software)
Occult Free Occultation Calculations software (Dave Herald, IOTA, MS Windows)
Planet 2000 Planetarium program, by Piero Massimino, CAO (Shareware, Palm OS)
+ Planet 2000 es una extensa herramienta para el astrónomo amateur. Un extenso programa tipo planetarium, también incluye algunas características de "Astro Compass".
+ Planet 2000 is an extense tool for the amateur astronomer. An extense planetarium program, also includes some features from "Astro Compass".
Planetarium Planetarium program, by AHo Software (Shareware, Palm OS)
+ Planetarium es una muy completa herramienta para el astrónomo amateur. Un completo programa tipo planetarium.
+ Planetarium is a very complete tool for the amateur astronomer. A complete planetarium program.
Planetarium Software (Bill Arnett)
Previsions for the ISS, the HST for the next 10 days Satellites Observation, by Alphonse Pouplier. (On-line Freeware, and MS DOS)
Project Pluto 'Guide' planetarium program (MS DOS & Windows, CD-ROM)
Radio-Sky Sidereal Clock (Freeware, MS Windows)
RegiStar (Automatic image registration for astrophotography, MS Windows)
Registax (Automatic image registration for astrophotography, Freeware, MS Windows)
Satellite tracking with GPS Varol Ocan (MS Windows)
SiderealTime Sidereal Time Clock/Calculator, by Glen Aspeslagh (Shareware, Palm OS)
Sienna Software Starry Night planetarium program (MS Windows or Macintosh)
SkyMap Planetarium program (MS Windows)
SkyView (The Internet's Virtual Telescope)
Softnik Technologies Time Synchronizer Accurately synchronize your computer's clock with any of the dozens of NTP servers on the Internet. Freeware (MS Windows)
Software Bisque's Web Page TheSky planetarium program (MS Windows, CD-ROM)
StarCalc Astronomy planetarium & star mapping program by Alexander Zavalishin. Freeware (MS Windows)
Stellarium (Free open source planetarium for your computer, by Fabien Chereau et al.)
Sundials Shadows - Create your own sundials (Française/English) François Blateyron. Freeware (MS Windows)
Sunflower Observatory Astronomy Pages (Stellarium-ASCOM Server and other software)
The Earth Centered Universe (ECU) (Nova Astronomics, MS Windows)
vb-Planetarium An easy PC Planetaruim for beginners. Freeware (MS Windows, Astroexcel)
Virtual Atlas of the Moon Free Astronomy software, Moon observation or survey (MS Windows, Patrick Chevalley, Christian Legrand, English version, versión en Castellano)
WinStars Shareware planetarium software (MS Windows, Franck Richard)
World Wind (NASA - Free Topographic Satellite Map of the Earth, Moon, Venus, Mars, Jupiter and the sky)

Other Astronomy and Astrobiology Web Sites (Otros sitios de Astronomía y Astrobiología en el Web):

25 Years of Voyager: An Epic Jouney (University of California)
3-D Star Maps (Winchell Chung)

Abrams Planetarium (Night Sky Notes)
Adler Planetarium and Astronomy Museum
Advanced Composition Explorer (ACE) (Sampling of low-energy particles of Solar origin and high-energy Galactic particles)
Alan Kostelecky (Standard-Model Extension (SME) - Background information on Lorentz/CPT Violation)
Albert Einstein - Image and Impact (American Institute of Physics History Center exhibit)
Albert Einstein Online (S. Morgan Friedman)
Almanako Almanac of Astronomical Events (Rick Wiegmann Koshko, English/Esperanto)
American Association of Amateur Astronomers (AAAA)
American Association of Variable Star Observers (AAVSO)
American Astronomical Society (AAS)
Amateur Astronomers Association of New York City (AAA)
American Institute of Mathematics (AIM)
American Institute of Physics (AIP)
American Mathematical Society (AMS)
American Physical Society (APS)
American Satellites Orbital Data at AMSAT
Analemma (Bob Urschel)
Apache Point Observatory
APOLLO (Apache Point Observatory Lunar Laser-ranging Operation)
Apollo Image Archive (Arizona State University)
Archaeoastronomy (Spotlights the dawn of human history)
Archives of Electronic Publishing in Science (Los Alamos National Laboratory)
Arkansas Sky Observatory (Fournier Lunar Atlas)
Arqueoastronomía
Artemis Project (Privately financed commercial venture for a permanent, manned Lunar base)
Association of Universities for Research in Astronomy Inc (AURA)
Association of Lunar and Planetary Observers (ALPO) (Harry Jamieson)
Asteroid Occultation Predictions (Steve Preston)
Astrobiology Magazine
Astronomers Without Borders
Astronomical League
Astronomical Society of the Pacific
Astronomy - at UCLA (Ned Wright, Vice Chair for Astronomy, UCLA)
Astronomy Boy (Resources & Tutorials for Amateur Astronomers)
Astronomy Cafe (Ask the Astronomer, Dr. Sten Odenwald)
Astronomy.com (Astronomy Magazine)
Astronomy in Latin America (LANIC) (University of Texas at Austin)
Astronomy Links (Astronomy and Space Related Links from Around the World)
Astronomy Notes (Astronomy, Introductory college-level course by Nick Strobel, Bakersfield College)
Astronomy Now
Astronomy to Go (Bob Summerfield, The Yard Scope)
Astrophotographer.com (Wil Milan)
Astrophotography by Tom Matheson
Astrophotography with small telescopes (Stefan Beck)
Astrophysical Journal
Astro Web Astronomy on the Internet - Astronomically Relevant Internet Resources
A Universe in Time (Images and Resources in Astronomy)
Aurora's Northern Lights (Jan Curtis)
A Walk Through Time National Institute of Standards and Technology (NIST)

B612 Foundation (To significantly alter the orbit of an asteroid, in a controlled manner, by 2015)
Berkeley Cosmology Group
Berkeley Open Infrastructure for Network Computing (BOINC) (SETI@home, Einstein@Home, etc.)
Big Bear Solar Observatory (New Jersey Institute of Technology)
Blind Watchmaker Applet (conceived by Richard Dawkins)
Botany online - The Internet Hypertextbook
BOOMERANG (Balloon Observations Of Millimetric Extragalactic Radiation ANd Geophysics)

California Institute of Technology Infrared Processing & Analysis Center (IPAC)
Cassini/Huygens mission (Signatures for Titan)
Cassini Imaging (CICLOPS)
Catching the Light (Astrophotography, By Jerry Lodriguss)
Center for Archaeoastronomy
Center for Backyard Astrophysics (CBA) (Photometry of Cataclysmic Variables, Astronomy - Columbia University)
Center for Environmental Biotechnology (CEB) (Biosensors, University of Tennessee)
Center for Particle Astrophysics (CfPA)
Ceres: The Dwarf Planet
Chabot Space & Science Center (East Bay Area - Oakland CA)
Chandra X-Ray Observatory Center
Charles Darwin Foundation for the Galapagos (con una sección en Castellano)
Chemical Elements.com - An Interactive Periodic Table of the Elements (Yinon Bentor)
Citizens for Responsible Lighting (CRL) (Light pollution and obtrusive outdoor lighting reform)
ClearDarkSky (Clear Sky Clocks for Canada, USA and parts of Mexico - Attilla Danko)
 - Clear Sky Alarm Clock (Mark Casazza)
Clementine - Mission Overview
Clementine - Deep Space Program Science Experiment (Naval Research Laboratory - NRL - Lunar Image Browser)
ClimatePrediction.Net (with a BOINC project)
Cloudbait Observatory (Colorado Rocky Mountains)
Clyde Tombaugh (1906-1997) (by Jeff Foust)
CNN.com - Space Exploration Gallery
Cometography (Gary Kronk)
Computing Sun & Moon Transits by the International Space Station (Tom Fly)
Cool Cosmos! (IPAC - California Institute of Technology)
Cooperative Institute for Research in Environmental Sciences (CIRES) (University of Colorado at Boulder)
Cooperative Institute for Meteorological Satellite Studies (CIMSS) (University of Wisconsin - Madison)
Cosmic Microwave Background Radiation (Douglas Scott)
Cosmic Microwave Background Radiation, an Introduction (Wayne Hu)
Cosmic Microwave Background Astrophysics Research Program (UC Berkeley - Lawrence Berkeley National Laboratory, George Smoot)
Cosmology Tutorial (Ned Wright, Vice Chair for Astronomy, UCLA)
Cosmos in a Computer (One of the best cosmology sites in the Web,
part of NCSA's Multimedia Online Expo, Science for the Millennium,
a "pavilion" of the Internet 1996 World Exposition)

Dale Ireland's Astronomy Page (Dale Ireland)
Dark Skies Awareness
Dave Jurasevich's Images of the Universe (Dave Jurasevich)
Dave Palmer's Astronomy Page (Dave Palmer)
Deep Impact (Mission to impact Comet Tempel 1 in July 4 '05, and fly past Comet Hartley 2 in 2010)
Digital Sky LLD (Milky Way Panoramics)
Dive and Discover - Expeditions to the Seafloor
Dr. James R. Webb (FIU Department of Physics)
Dynamical Astronomy JavaLab (Case Western Reserve University)

Earth & Sky (Radio Series)
Earth Science, Logistics, and Outreach Terrainbases (EarthSLOT)
Eclipse Chaser (Jeffrey R. Charles)
Eclipse Weather and Map Files (Jay Anderson)
Edge Foundation Promoting inquiry into and discussion of intellectual, philosophical, artistic, and literary issues
 - The Third Culture (Beyond the Scientific Revolution, by John Brockman)
Einstein Online (English version, Max Planck Institute)
Elsevier Science
Encyclopedia.com (from Electric Library)
Encyclopedia Astronautica (History of Spaceflight)
Endeavour Project (Captain James Cook Pacific Voyages 1768-1779)
Einstein@Home [BOINC project for MS Windows, Macintosh & UNIX]
A scientific experiment that will harness the power of Internet-connected computers to search for spinning neutron stars (called pulsars) using data from the LIGO and GEO gravitational wave detectors.
Environmental Molecular Sciences Laboratory - William R. Wiley (EMSL) (Artificial/Computational Intelligence)
Epoxi Mission (Flyby of Comet Hartley 2 in 2010, University of Maryland)
Eric's Black Sun Eclipse Website
eSky: The Electronic Sky
 - Planet Wheel (a guide to the visibility of the planets in the sky)
European Centre for Medium-Range Weather Forecasts (ECMWF) (Deterministic medium-range forecast charts)
European Southern Observatory (ESO) La Silla, Paranal (VLTI) - Chile
Exploratorium (San Francisco)
Exploring the Moon (Charles A. Wood, Space Studies; University of North Dakota)

Far Ultraviolet Spectroscopic Explorer (FUSE) (Johns Hopkins University - NASA: June 24, 1999 - July 12, 2007)
Fermi National Accelerator Laboratory (Fermilab)
FirstScience.com (Science Articles, Poems and News)
Florida Marine Research Institute
Focus Fusion Society (Practical, Safe, Low-Cost Clean Energy, from Hydrogen & Boron by Nuclear Fusion)

Gary Agranat's Home Page (Astronomy Homework Help)
Gemini Observatory (Mauna Kea, Hawaii & Cerro Pachón, Chile)
GEO 600 (Direct Detection of Gravitational Waves)
Geonames Query Home Page (GNS) (Geographic Names Data: Coordinates)
Global Volcanism Program (National Museum of Natural History - Smithsonian Institution)
Gravity Probe B (Testing Einstein's Universe)
Grazing Occultation Events (Interactive Maps of Event Paths, Brad Timerson)
Great Lakes Area Astronomy Groups (Douglas Bock)
Great Circle Calculator (Javascript, Ed Williams)
Griffith Observatory

Haughton-Mars Project (HMP) (Mars on Earth 2006, a study of an Artic analog for Mars)
Hawaiian Astronomical Society
High Altitude Observatory (HAO) (Solar and Atmospheric Physics Research and Education)
High Energy Solar Spectroscopic Imager (HESSI) (U. of Berkeley)
High-Energy Transient Explorer 2 (HETE-2) (MIT)
Hobby-Eberly Telescope (HET)
Hubble Space Telescope Key Project on the Extragalactic Distance Scale (California Institute of Technology)
How Stuff Works (Marshall Brain)
HyperPhysics Concepts (Rod Nave, Georgia State University)

ICSTARS Astronomy (Southern Skies Star Party [SSSP] - Titicaca, Bolivia)
Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) [at Southwest Research Institute (SwRI)]
Inconstant Moon (Multimedia tours of the lunar surface)
Institute for Marine Remote Sensing (IMaRS) (University of South Florida)
International Astronomical Union (IAU)
International Astronomical Union (IAU): CBAT/MPC/ICQ Index
International Astronomical Union (IAU): Central Bureau for Astronomical Telegrams (CBAT)
International Astronomical Union (IAU): Minor Planet Center (MPC)
International Astronomical Union (IAU): Recent Comet magnitudes (ICQ/CBAT/MPC)
International Astronomical Union (IAU): International Comet Quarterly (ICQ)
International Astronomical Union (IAU): Astronomical Headlines
International Astronomical Union (IAU): Ephemerides and Orbital Elements
International Astronomical Union (IAU): Observable Comets
International Year of Astronomy 2009 (IAU IYA2009) The Universe: Yours to Discover
International Dark-Sky Association (IDA)
International Heliophysical Year (IHY) - 2007
International Occultation Timing Association (IOTA)
International Society for Archaeoastronomy and Astronomy in Culture (ISAAC)
Internet Amateur Astronomers Catalog (IAAC) (NetAstroCatalog Mailing List, Lew Gramer)
Introduction to Earth Sciences I (John C. Mutter)
Introduction to Physical Geography (Christine M. Rodrigue Ph.D., California State University, Long Beach)
Institute of Physics
IOTA Asteroidal Occultation, Mid-Atlantic Occultation, Eclipse, and Lunar Impactors Page

Java based Mars geographical information system - JMARS (Arizona State University)
John Baez's Stuff (Quantum Gravity & n-Categories)
John Dobson (The Official Web Site)

Keck Observatory (University of California Observatories)
  W. M. Keck Observatory (Mauna Kea, Hawaii)
Keith's Pages (Keith's Astrolabes, a Java program)
Kid's Cosmos (Science Resources for Teachers and Students)

Laser Interferometer Gravitational Wave Observatory (LIGO) (California Institute of Technology)
Lawrence Berkeley National Laboratory
Library of Congress Vatican Exhibit
Lick Observatory (University of California Observatories)
Life32 Conway's Game of Life (Cellular Automata) freeware for MS Windows (Johan Bontes)
Lincoln Near Earth Asteroid Research (LINEAR) (MIT Lincoln Laboratory)
Linda Hall Library of Science, Engineering and Technology - Online Exhibitions
Live Search Maps (Microsoft Virtual Earth)
Living Reviews in Relativity (Research Journal, Max Planck Institute)
Lockheed Martin Solar and Astrophysics Laboratory (LMSAL)
Lost Valley Observatory and Astrophotography (Keith Quattrocchi)
Lowell Observatory (Orbital Elements for Asteroids)
 - Asteroid Data Services
Lunar Occultations and Grazes (IOTA)
Lunar Orbiter Photographic Atlas of the Moon (Lunar and Planetary Institute)
Lunar and Planetary Laboratory (LPL) (University of Arizona, Tucson)

Malin Space Science Systems (MSSS)
 - MSSS Marslink Essays
 - Mars Global Surveyor (MGS) & Mars Orbiter Camera (MOC) Images
Map Collection (Perry-Castañeda Library, University of Texas, Austin)
Marquette Astronomical Society
Mars by Stealth (A Sci-Fi comedy adventure by Peter Rasmussen)
MarViva (Protecting Marine Paradises - Protegiendo Paraísos Marinos)
MathPages
McDonald Observatory (University of Texas)
MCell 1D and 2D Cellular Automata (Game of Life) explorer freeware for MS Windows (Mirek Wojtowicz)
Mel Bartels' BB AstroDesigns (Computer Operated Telescopes and Telescope Making)
 - How to Optically Align Your Telesope
MESSENGER Mission (Mercury Surface, Space Environment, Geochemistry and Ranging. Johns Hopkins University)
Messier45.com (Deep Sky Browser, Messier Gallery, Herschel 400)
MetEd (Meteorology Education & Trainning)
Meteor Showers Online (Gary Kronk)
Metric Conversions (Metric conversion calculators and charts)
Michelson Doppler Imager project (MDI) (Stanford-Lockheed Solar Oscillations Investigation (SOI) - SOHO)
Michigan Astronomy (John Ridley)
MIR Space Station - 15 Years In Orbit (Feb 19, 1986-2001)
Mike Brown (Planetary Astronomy, Caltech)
Milkyweb Astronomical Observatory Guide (Wolfgang Grond)
Modern Relativity
Molecular Expressions (Images from the Microscope. Secret Worlds: The Universe Within - Powers of 10. Java)
Moonglow Observatory (Fred Bruenjes' Astronomy Stuff)
Mount Graham International Observatory (MGIO) (University of Arizona)
Mount Wilson Observatory
Multiwavelength Astronomy Gallery (Cool Cosmos)

National Dark-Sky Week (con versión en Castellano)
National Geographic Society Magazine Online (con versión en Castellano)
National Radio Astronomy Observatory (NRAO)
  Atacama Large Millimeter Array (ALMA)
  Green Bank Telescope (GBT)
  Very Large Array (VLA)
  Very Long Baseline Array (VLBA)
National Science Foundation (NSF)
National Solar Observatory (NSO)
National Space Society (NSS)
National Optical Astronomy Observatories (NOAO) Cerro Tololo Inter-American Observatory (CTIO) and Kitt Peak National Observatory (KPNO)
Nature International weekly journal of science
Naval Research Laboratory's Large Angle and Spectrometric Coronagraph Experiment (LASCO) (NRL)
Naval Research Laboratory's SOHO/LASCO Home Page (NRL)
Naval Research Laboratory - Monterey: Marine Meteorology Division (NRL-MRY)
Naval Research Laboratory - Monterey: Satellite Meteorology (NRL-MRY)
NEAR - Shoemaker (Near-Earth Asteroid Rendevouz with Eros)
Neil4Sharks (Neil Hammerschlag; Shark conservation, education, research)
New England Meteoritical Services (Meteorites)
NGC/IC Project (Identify all of the original NGC and IC objects)
Nobelprize.org (Nobel Prizes, Nobel Foundation)
NOVA (PBS Science Online Programming)
 - Einstein's Big Idea (Relativity)
 - Origins (The Beginning of Everything)
 - The Elegant Universe (String Theory)
 - To the Moon (The science and engineering story)
Northeast Florida Astronomical Society (NEFAS) (Roger Curry)
Northern Cross Observatory (NCO) (Doug Bock)
Northern Virginia Astronomy Club (NOVAC)
Novaspace Galleries

Occultations by Solar System Objects
Ohio State University, Department of Astronomy
OnEarth Magazine (Environmental Issues, NRDC)
On-Line Biology Book (Michael J. Farabee)
On the Origin of Species by Means of Natural Selection - Charles Darwin (Online Library of Literature)
Orbitron (Free Satellite tracking software)
Origins of life and the RNA World (Jolane Abrams)

PALEOMAP Project (The history of Earth and Climate, Christopher R. Scotese)
Paul Goelz's Web Site (Astronomy, Videoastronomy, modification to the Supercircuits PC23C video camera)
Paul's BOINC Documentation Site
Peoria Astronomical Society
Phoenix Mars Lander (NASA-LPL, Underground water, 4 August 2007 - 25 May 2008)
PhysicalGeography (Dr. Michael Pidwirny, University of British Columbia Okanagan)
Physics Central
PhysicsWeb (Physics World Magazine)
Pirelli INTERNETional Award
Poor Meadow Dyke Observatory (PMDO) Telescope and CCD Webcam Modifications for Astrophotography
Princeton Pulsar Group
Proceedings of the National Academy of Sciences of the United States of America
ProfJohn's Eclipselive.com
Project Gutenberg (Fine Literature Digitally Re-Published -- Your FREE Personal Library)
Projects in Scientific Computing (Pittsburgh Supercomputing Center)
ProSpace; The Citizens' Space Lobby
Puckett Observatory (Automated Supernova Search, Tim Puckett)

Real Time Satellite Tracking
Relativity Tutorial (Ned Wright, Vice Chair for Astronomy, UCLA)
Revista Latino-Americana de Educación en Astronomía (RELEA) (en Portugués, Castellano e Inglés)
Revista Universo Digital - Liga Iberoamericana de Astronomía (LIADA) (en Castellano)
RichardDawkins.net (Richard Dawkins Foundation and Website)
Robert Reeves - Schmidt Camera Astrophotography
Robinson Lunar Observatory
Robotic Optical Transient Search Experiment (ROTSE)
Rod Mollise's Astro Land (SCT User E-mail list, The Mobile Astronomical Society)
Rossi X-ray Timing Explorer (RXTE) (MIT)

SAC - CCD Imaging Systems
Saguaro Astronomy Club
San Jose Astronomical Association
SandlotScience.com (Science and Illusions)
SciDev Magazine Online A free access gateway to information about science and technology for developing countries
Science History Timeline
Science Magazine Online
Science Timeline
Science U (Learn About Science)
Scientific American
Seeing Our World in a Different Light (Cool Cosmos - Infrared Light Lessons)
SETI@home (With SETI@home/BOINC project. For MS Windows, Macintosh & UNIX)
  A scientific experiment that will harness the power of hundreds of thousands of Internet-connected computers in the Search for Extra-Terrestrial Intelligence. You can participate by running a screensaver program that downloads and analyzes radio telescope data. There's a small but captivating possibility that your computer will detect the faint murmur of a civilization beyond Earth. (Windows: 710KB Screen-Saver download, 350KB each Data Unit. 32MB RAM, 8-bit color in 800x600 resolution display requeried)
  Un experimento científico que utiliza el poder de cientos de miles de compuadoras con conexión al Internet para la Búsqueda de Inteligencia Extra-Terrestre. Ud. puede participar corriendo un "Screen-Saver" que baja y analiza datos de radio-telescopios. Hay una pequeña, pero cautivadora posibilidad de que su computador detectara el leve murmullo de una civilización extra-terrestre. (Windows: 710KB Screen-Saver download, 350KB cada Unidad de Datos. 32MB RAM, color de 8 bits en un display con resolución de 800x600 requeridos)
SETI Institute
SETI League
Sharkwater (Rob Stewart, exploring sharks)
Shark Research Institute (Shark conservation, education, research)
Sierra Remote Observatories (Robotic imaging and data acquisition. California, Sierra Nevada Mountains)
Sky & Telescope
Skyhound (Sky News & Event Calendar for observers, by Greg Crinklaw)
Sloan Digital Sky Survey
Smithsonian Institution
Smithsonian National Air & Space Museum
Society for Amateur Scientists
Solar Radiation and Climate Experiment (SORCE)
Sondas Espaciales (en Castellano)
Southeastern Association for Research in Astronomy (SARA)
South Florida Amateur Astronomers Association (SFAAA) (The Fox Observatory)
South Pole Telescope (SPT) (Dark Energy, Cosmic Microwave Background. University of Chicago)
Southern Cross Astronomical Society (SCAS) (Winter Star Party, West Summerland Key, Florida)
Space.edu (University of North Dakota - Department of Space Studies)
Space.com (Space news, with free e-mail updates)
Space Archive (Ventura County, California. Brian Webb)
Spaceflight Now (Online Space News)
Space Exploration Technologies Corporation - SpaceX (Commercial Orbital Transportation Services)
Space Explorers, Inc. (Bringing Space Into the Classroom)
Space Frontier Foundation
Space News
SpaceRef.com (Space Exploration News)
Space Time Travel (Relativity Visualized)
Spacetime Wrinkles (One of the best Relativity sites in the Web,
part of NCSA's Multimedia Online Expo, Science for the Millennium,
a "pavilion" of the Internet 1996 World Exposition)
SPOT Imaging satellites
Staigerland Solar Eclipse Webcasts (Philip Staiger)
Stanford SOLAR Center (Stanford University)
StarDate Online - Your Guide to the Universe (McDonald Observatory, University of Texas)
StarGarden Foundation to promote public interest and knowledge of astronomy (Victor & Jennifer Winter)
Star Gazer (Jack Horkheimer) One year of weekly naked-eye astronomy shows for RealPlayer
Stanford Linear Accelerator Center (SLAC) (Stanford University, U.S. Dept. of Energy)
Stephen Wolfram Scientist, Creator of Mathematica, and Author of A New Kind of Science (NKS Online)
 - Wolfram|Alpha (Computational Knowledge Engine, launched May 18, 2009)
 - Wolfram Research (Mathematica: a numeric and symbolic computational engine, graphics system,
     programming language, documentation system, and advanced connectivity to other applications)
 - Wolfram Science (The Official Website of Stephen Wolfram's A New Kind of Science)
 - CalculationCenter (Wolfram Research's accurate, easy to use, equation solver software. w/ Free trial)
 - Eric Weisstein's Science World (Worlds of Astronomy, Biography, Chemistry, Mathematics, Physics)
 - Wolfram Educational Portal (Resources for pre-college grade levels)
 - Wolfram Web Resources (Other Wolfram Sites, including The Integrator - powered by Mathematica,
   Demonstrations - Interactive visualizations in math and science - powered by Wolfram Mathematica Player)
Submillimeter Wave Astronomy Satellite (SWAS)
Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) (U.S. Naval Research Laboratory - NRL)
Sungazer.net (Observing the Sun in Hydrogen-Alpha and Calcium Light)
Sungrazing Comets (SOHO Comets) (U.S. Naval Research Laboratory - NRL)

Tanner's General Chemistry (Tanner McCarron)
TerraServer-USA (Maps and aerial photographs of the United States)
The Astrolabe (The Electric Astrolabe)
The ATM Site (Resources and Techniques for Amateur Telescope Makers)
The Ayn Rand Institute (Promoting reason, rational self-interest, individual rights and laissez-faire capitalism)
 - Ayn Rand's Ideas (A Philosophy for Living on Earth)
The Constellations and their Stars (Chris Dolan)
The Constellations Web Page (Richard Dibon-Smith)
The Cosmological Constant (Eli Michael)
The Electronic Universe (University of Oregon, Department of Physics)
The Extrasolar Planets Encyclopaedia
The Galileo Project (Rice University)
The Hayden Planetarium
The LXD55 Portal
The New York Times: Science
The Night Sky Live - Continuos Camera (CONCAM)
The Official String Theory Web Site (Patricia Schwarz)
The Particle Adventure (en 8 idiomas, incluyendo La Aventura de las Partículas, en Castellano)
The Pictorial Periodic Table
The Planetary Society
The Planetary Society Near Earth Objects Page
The Shallow Sky (Observing the Solar System, by Akkana)
The SkyWise Archive (Jay Ryan)
The Talk.Origins Archive (Exploring the Creation/Evolution Controversy)
The Telescope Review Web Site (Ed Ting)
The Telson Spur (The Snark Hunter's Page, Links in The Study of Time and Evolution)
The Tree of Life (Information about phylogeny and biodiversity)
The University of California Planet Search Project
The University of North Dakota - Sun-Earth-Moon System (SEMS) Project & Webcasts
The World At Night (Sky Photographs)
The WWW Virtual Library (The oldest Web catalog, started by Tim Berners-Lee, creator of HTML and the Web)
time and date.com
Timeline Index (Chronologies of People, Periods, Places, Events)
Two-Micron All-Sky Survey (2MASS) (University of Massachusetts, Amherst)

UCLA - Division of Astronomy & Astrophysics
U.C. Santa Barbara Astrophysics Project
Union of Concerned Scientists (Citizens and Scientists for Environmental Solutions)
United Space Alliance (Space Shuttle main contractor, with live mission tracking & telemetry data, NASA-TV links)
Unisys Weather
Universe Today (Space News from around the Internet, updated every weekday)
University of Alabama - Department of Physics and Astronomy (Astronomical Images)
University of Arizona - Department of Astronomy and the Steward Observatory
University of California Museum of Paleontology (UCMP) (Phylogeny, Geology & Evolution Exhibts)
University of Miami Astronomy Club (Nicholas Copernicus Observatory)
Universo Online - Su Guía para el Universo (Observatorio McDonald de la Universidad de Texas, en Castellano)
Usenet Physics and Relativity FAQ (General, Particle and Nuclear, and Quantum Physics, Relativity and Cosmology)
US Geological Survey Home Page (USGS)
 - USGS Astrogeology: Gazetteer of Planetary Nomenclature (USGS-IAU-NASA)
 - USGS Astrogeology: Map-a-Planet (PDS) (Venus, Moon, Mars, Callisto, Europa, Ganymede, Io)
 - USGS Earth Explorer
 - USGS Landsat Project
 - USGS National Geomagnetism Program
U.S. National Virtual Observatory (NVO)
U.S. Naval Observatory (USNO)
U.S. Naval Observatory - Astronomical Applications Department (Data Services)
U.S. Naval Observatory - Current Time (UTC Web-based clock)

Vatican Observatory
Videoastro (Discusion of Equipment and Techniques for Video Astronomy)
Video Capture Astrophotography (Jim Ferreira)
Views of The Solar System (Calvin J. Hamilton) English
 - Vistas del Sistema Solar (Calvin J. Hamilton) Castellano
 - Vistas do Sistema Solar (Calvin J. Hamilton) Português
 - Regards sur le Système Solaire (Calvin J. Hamilton) Fraçais
 - Ansichten des Sonnensystems (Calvin J. Hamilton) German
Violence in the Cosmos (Explosive Processes and the Evolution of the Universe, Michael W. Guidry)
Visual Quantum Mechanics (Kansas State University - Physics Education Group - Tutorials)
Visual Satellite Observer's Home Page

Warren Astronomical Society
Weasner's Mighty ETX Site
Weasner's LXD55 Site
Weatherbase (World monthly weather records and averages)
Weather Underground
Web Elements.com (An Interactive Periodic Table of the Elements)
Wendy Carlos Eclipse Page
Werner Heisenberg (1901-1976) (American Institute of Physics History Center exhibit)
West Texas Astronomers (Midland, Texas)
Whispers from the Cosmos (One of the best Radioastronomy sites in the Web,
part of NCSA's Multimedia Online Expo, Science for the Millennium,
a "pavilion" of the Internet 1996 World Exposition)
Wikipedia The free encyclopedia
Windows to the Universe (University of Michigan)
WIYN Observatory (Kitt Peak)
World Climate (Weather, Rainfall and Temperature Data)
World History: HyperHistory Online
WorldWide Telescope (Virtual telescope, a Microsoft Web 2.0 visualization software)
World Year of Physics 2005 (with Einstein@Home BOINC project)
WW2010 - the weather world 2010 project (University of Illinois)

Yakima Valley Astronomy Club (Bruce Perrault)
Yohkoh Public Outreach Project (images and movies of the Sun, Solar X-ray telescope satellite)

Countries (Países):

Argentina:
Asociación Entrerriana de Astronomía
Centro de Estudios Astronómicos Mar del Plata (CEA)
Cielo Sur (Astronomía desde el Hemisferio Sur)
 - Ecos de un Mundo Estrellado (Programa semanal de Luis Trumper)
espacial.com
Espacio Profundo
Instituto Argentino de Radioastronomía (IAR)
Liga Iberoamericana de Astronomía (LIADA)
 - Revista Universo Digital - Liga Iberoamericana de Astronomía (LIADA)
Met.net (Clima y Meteorología)
Observatorio Astronómico de Córdoba (OAC) Universidad Nacional De Córdoba
Pagina Personal de Daniel José Mendicini
Planetario Carl Sagan (Planetario Móvil)
Sur Astronómico

Australia:
Anglo-Australian Observatory
Astronomical Society of South Australia
Brad Moore's Astrophotography (Southern Hemisphere Celestial Marvels)
Cosmodome (MirrorDome Mobile/Fixed Planetarium Projection System)
Einstein Light (Relativity: Einstein's theory in animations and film clips, University of New South Wales)
Gordon Garradd's Astronomy Page
Grove Creek Observatory (Steven Williams)
High Resolution Lunar and Planetary Imaging (Zac Pujic)
MonoRealism - Philosophy of the Real World (Dr. Robin Craig)
Mount Stromlo & Siding Spring Observatories
The Mars Society - Australia
Two-Degree Field Survey (2dF)

Belgium:
La Terre, le grand aimant - De Magnete, W. Gilbert (David P. Stern, Française)

Brasil:
Astronomia & Astronáutica do ZECA
Laboratório Nacional de Astrofísica (MCT)
Liga Iberoamericana de Astronomía (LIADA)
Revista Latino-Americana de Educación en Astronomía (RELEA) (en Portugués, Castellano e Inglés)
SciELO.org (Scientific Electronic Library Online)
Southern Astrophysical Research (SOAR) Telescope

Canada:
Astronomy at the University of British Columbia
Auriga Imaging (RegiStar, Automatic image registration for astrophotography)
Canadian Galactic Plane Survey (CGPS)
Canadian Hurricane Centre (CHC)
Canadian Institute for Theoretical Astrophysics (CITA)
Canadian Space Agency (CSA)
Edmonton Centre of The Royal Astronomical Society of Canada
Geological Survey of Canada (GSC) - Geomagnetism
    GSC Magnetic Declination Calculator
Les Neuf Planètes (Bill Arnett)
Liquid Mirror Telescopes (University of British Columbia)
Mike Boschat's Astronomy Page
Microvariability & Oscillations of STars (MOST) (Canada's First Space Telescope)
RADARSAT (Canadian Space Agency - CSA)
The Royal Astronomical Society of Canada (La Société Royale d'Astronomie du Canada)

Chile:
Círculo Astronómico
European Southern Observatory (ESO) Paranal Very Large Telescope Interferometer (VLTI). La Silla Observatory. Atacama Large Millimeter Array (ALMA). OverWhelmingly Large Telescope (OWL).
Gemini Observatory (Mauna Kea, Hawaii & Cerro Pachón, Chile)
Liga Iberoamericana de Astronomía (LIADA)
Observatorio Astronómico Mélaga
Turismo Astronómico en Chile

China:
Science in China (Scientists, Astronomy, Archeology, Mathematics)
Yeiht (Quanzhi Ye)

Colombia:
Astronomía Autodidacta
Liga Iberoamericana de Astronomía (LIADA)
Observatorio Astronómico Universidad Sergio Arboleda

Costa Rica:
Asociación Costarricense de Astronomía
Fundación CIENTEC
Liga Iberoamericana de Astronomía (LIADA)

Danmark:
Tycho Brahe Planetarium

El Salvador:
Asociación Salvadoreña de Astronomía (ASTRO)
Liga Iberoamericana de Astronomía (LIADA)

España:
100cia.com La actualidad científica al alcance de todos
Agrupación Astronómica Magallanes de Jerez de la Frontera (Cádiz)
Agrupación Astronómica de Gran Canaria (Víctor R. Ruíz)
Agrupación Astronómica de Tenerife
Astroenlazador.com
Astroguia.org
Astronomía Digital (info.astro) Revista internacional de astronomía en Español (Víctor R. Ruíz)
Astronomía en Internet (Cómo usar el Internet para aprender a observar el cielo y a elegir un telescopio)
AstroRED (Alex Dantart)
Astroseti.org
Consejo Superior de Investigaciones Científicas (CSIC)
Cursillo de Astronomía (Jordi Mas)
Departamento de Astrofísica - Universidad Complutense de Madrid (UCM)
educa-ciencia.com (Ciencia y Astronomía para la educación)
El astro rey (Información sobre el Sol)
Elsegundoluz.com (Revista de Astronomía, Astrofísica y Exploración Espacial)
Estudio y Reconstrucción de la Gnomónica Hispanomusulmana
Gran Telescopio Canarias (GTC) (Observatorio del Roque de los Muchachos, La Palma, España)
Grup d'Estudis Astronòmics (GEA) (en Castellano)
info.astro (Víctor R. Ruíz, Agrupación Astronómica de Gran Canaria)
Instituto de Astrofísica de Canarias
Instituto Nacional de Meteorología
Instituto Nacional de Técnica Aeroespacial (INTA)
Liga Iberoamericana de Astronomía (LIADA)
Los Nueve Planetas (AstroRed, Original de Bill Arnett)
MeteoRed (El tiempo - Meteosat, información, previsión, y predicción meteorológica)
Noticias de la Ciencia y la Tecnología / Noticias del Espacio
Observatori Astronòmic de Mallorca
Observatorio Astronómico Municipal Monte Deva - Gijón
Planetario de Pamplona
Red de Investigación sobre Bólidos y Meteoritos (SPMN)
Sociedad Astronómica Asturiana Omega
Sociedad Astronómica de España y América (SADEYA)
Sociedad de Observadores de Meteoros y Cometas de España (SOMYCE)
Somnium - Web de Cronología Astronómica (Francisco Rodríguez Bergali)
Starlight (Starlight Initiative for the night sky / Iniciativa Starlight para el cielo nocturno)
The Mars Society - España
Tribuna de Astronomía
Vistas del Sistema Solar (Calvin J. Hamilton) Castellano
www.TuTiempo.net (Información meteorológica de todo el mundo)

Finland:
Finnish Amateur Astronomy Home Page (Veikko Mäkelä)
Polar Image Atmospheric Phenomena (Pekka Parviainen)

France:
Astrophotography - Thierry Legault (High Resolution CCD Imaging, Française/English)
Astro Surf
Cartes du Ciel - Sky Charts Free Astronomy software, Celestial atlas (Patrick Chevalley, English version, con versión en Castellano)
Centre de Données astronomiques de Strasbourg (CDS)
 - Simbad Astronomical Database
 - VizieR Astronomical Catalog Service
 - The Aladin Interactive Sky Image Atlas
 - Astro Web Astronomical Internet Resources, AstroWeb Consortium
Computer Aided Astronomy (C2A) Planetarium software, Freeware (MS Windows)
Institut de Mécanique Céleste et de Calcul des Éphémérides (IMCCE) (Française/English)
Regards sur le Système Solaire (Calvin J. Hamilton)
Sundials Shadows - Create your own sundials (Française/English) François Blateyron. Freeware (MS Windows)
SPOT Imaging satellites
Virtual Atlas of the Moon Free Astronomy software, Moon observation or survey (Patrick Chevalley, Christian Legrand, English version, con versión en Castellano)
WinStars Shareware planetarium software (MS Windows, Franck Richard)

Germany:
Ansichten des Sonnensystems (Calvin J. Hamilton) German
Astronomiae Historia / History of Astronomy (Wolfgang R. Dick)
Axel Mellinger's Astrophotography Page (Photograph of the whole Milky Way and Virtual Reality Milky Way Panorama)
Einstein Online (English version, Max Planck Institute)
Heavens-Above (Sky and Satellite Visibility)
International Meteor Organization (IMO)
International Occultation Timing Association - European Section (IOTA-ES)
Max Planck Institut für Astronomie (English version)
Max Planck Society (English version)
Physics and Astronomy ("Sun, Earth and Moon" and Multiwavelength Messier Museum)
The Munich Astro Archive (Christine Kronberg)
vb-Planetarium An easy PC Planetaruim for beginners. Freeware (MS Windows, Astroexcel)

Ireland:
Astronomy Ireland (David Moore)

Italia:
Agenzia Spaziale Italiana (ASI)
Asteroid Information Services (Space Mechanics Group, Department of Mathematics, University of Pisa)
 - Asteroids Dynamic Site (AstDyS)
 - Near Earth Objects Dynamic Site (NEODyS)
Astrofili.org (Portale per l'astronomia in Italia, Fabio De Sicot)
Astrophotography (Lorenzo Lovato)
Bellatrix Astronomical Observatory (Gianluca Masi)
Cielo e Terra ["Sky Draw - Mappa del Cielo", "Earth Map - Mappa della Terra", "Eclipses & Earth - Eclisse e Terra", "Planetarium - Planetario"] (Piero Massimino, CAO)
Circolo Astrofili Talmassons
Dagli astronomi alle astronavi (David P. Stern)
Institute and Museum of the History of Science - Florence
International Supernovae Network (Stefano Pesci)
inquinamentoluminoso.it (by Pierantonio Cinzano)
Istituto di Radioastronomia, Bologna
Istituto Nazionale di Fisica Nucleare (INFN)
Osservatorio Astrofisico di Catania (CAO)
Osservatorio Astronomico di Palermo (OAPa)
Nico Lonetti - ASTRONOMIA
the Abdus Salam International Centre for Theoretical Physics
The Nine Planets - Versione italiana (Bill Arnett)

Japan:
Astro Arts
Astronomy in Japan Page (Steven Renshaw)
Hayabusa Project Science Data Archive (Samples from asteroid 25143 Itokawa, 2003-2010)
Hinode (Solar-B) Science Center at NAOJ
Ikufumi Makino - Comets
Institute of Space and Astronautical Science (ISAS)
Japan Aerospace Exploration Agency (JAXA)
Seiichi Yoshida's Home Page (Comets and the MISAO Project)
Taki's Home Page (Telescope making and visual observation of deep sky objects)

Jordan:
The Jordanian Astronomical Society (Mohammad Shawkat Odeh)

Latvia:
The Astronomical Observatory of Latvia

Malta:
The Astronomical Society of Malta

México:
Area de Astronomía en la Universidad de Sonora
Astronomos.org
Club de Astronomía Mexitli
Kosmos Scientific
 - El Cielo Nocturno
Liga Iberoamericana de Astronomía (LIADA)
MegaCosmos (Jesús Gerardo Rodríguez Flores)
Sociedad Astronómica de Aguascalientes (SAA)
Sociedad Astronómica del Planetario Alfa [Atlas Lunar]
Xosmos Astronomia Amateur desde el Observatorio Las Palmas, Hermosillo, Sonora

Netherlands:
ClearSkies.NL (Free Guides & Tours of the sky, Victor van Wulfen)
Dutch Open Telescope (DOT) (Observatorio del Roque de los Muchachos, La Palma, Spain)
Hallo northern sky (HNSKY) Planetarium program with 10607 deepsky objects and all stars to magnitude 12, and with the original GSC CD-ROM's, GSC-ACT or the USNO to magnitude 15 or more. Displays all planets, the Moon, Sun, moons of Saturn and Jupiter, Mars, Uranus and Neptune and a few hunderd asteroids and comets. By Han Kleijn. Freeware (MS Windows)
Netherlands Foundation for Research in Astronomy (ASTRON) (Westerbork and LOFAR Synthesis Radio Telescopes)
The Maya Astronomy Page (Michiel Berger)
The Virtual Tour of the Sun (Michiel Berger)

Norway:
Astronomy.no
De Ni Planetene (Bill Arnett)
Institute of Theoretical Astrophysics, Oslo
UNEP-GRID-Arendal (Environmental Knowledge for Change)

Paraguay:
Centro Paraguayo de Informaciones Astronómicas (CPIA)
Liga Iberoamericana de Astronomía (LIADA)

Perú:
La Astronomía en el Perú
Liga Iberoamericana de Astronomía (LIADA)

Portugal:
Liga Iberoamericana de Astronomía (LIADA)
Os Nove Planetas
Pedro Ré's Astronomical CCD Imaging

República Dominicana:
Liga Iberoamericana de Astronomía (LIADA)
Sociedad Astronómica Dominicana (SAD)

Romania:
The Night Sky This Week

Russia:
Institute of Applied Astronomy, St. Petersburg (IAA) (Orbital Elements for Asteroids)
Russian Space Science Internet Web Server
Space Research Institute (IKI)
High Energy Astrophysics Department (IKI-HEA)
StarCalc Astronomy planetarium & star mapping program by Alexander Zavalishin. Freeware (MS Windows)

Scotland:
The MacTutor History of Mathematics

South Africa:
Cederberg Astronomical Observatory (CAO)
South African Astronomical Observatory (SAAO)
Southern African Large Telescope (SALT)
Willie Koorts's Astronomy Telescope Making and Satellite Tracking Pages

Sweden:
Institute for Solar Physics [Swedish 1-m Solar Telescope (SST)] (El Roque de los Muchachos, La Palma, Spain)

Switzerland:
AHo Software (Planetarium program, Shareware, Palm OS)
CalSKY - The Calculated Sky On-line Configurable Astronomical and Space Calendar
European Organization for Nuclear Research (CERN)
 - The Large Hadron Collider (LHC)
Fourmilab - Index Librorum Liberorum (John Walker)
The Particle Detector BriefBook (Rudolf K. Bock, CERN)

Ukraine:
Astronomy and Space Physics Department (Kyiv National Taras Shevchenko University)
 - Celestial calendar
 - Computer Ephemeris

United Kingdom:
Armagh Observatory
Astronomy Now Online
Atmospheric Optics (Les Cowley)
BBC - Radio 4 - Science Index
British Astronomical Association
Cambridge Astronomy
Cambridge Physics (Cavendish Laboratory outreach)
Cardiff University Relativity Group (Gravitational Waves)
Cambridge Conference Network (CCNet) (Geological and historical NEO-catastrophism)
Faulkes Robotic Telescopes Project
Foundations to Chemistry (Adapted from Chemistry, Matter and the Universe)
Jodrell Bank Observatory
New scientist (Science News)
Noble Dane: Images of Tycho Brahe (Museum of the History of Science, Oxford)
Royal Observatory Greenwich
ScopeTest.com (Ade Ashford)
Stephen Hawking
Sundials in the Internet
The Astronomer Magazine
The Climate Group (to put the world on track for a low carbon economy reducing greenhouse gas emissions)
The Hitchhiker's Guide to the Galaxy - h2g2 (Douglas Adams - BBC)
  The only unconventional guide to Life, The Universe and Everything
The Sky at Nigth (Sir Patrick Moore, BBC Online)
The Society for Popular Astronomy (SPA)
Tony Helyar's Sundial Page (and The Equation of Time)
UCL Astrophysics Group

United Nations:
Office for Outer Space Affairs
United Nations Environment Programme (UNEP)
 - Intergovernmental Panel on Climate Change (IPCC)
Universe Awarness for Young Children (UNAWE)
World Meteorological Organization (WMO)

Uruguay:
Asociación de Aficionados a la Astronomía - Uruguay (AAA)
Astroplaneta (Martín Dutra)
Liga Iberoamericana de Astronomía (LIADA)
Observatorio Astronómico Kappa Crucis

Venezuela:
Agrupación de Astronomía de Paraguaná
Astroaborígen
Astronomía (Jesús Piñeiro)
Astronomía y algo más ... (Jesús Sanabria)
Caracas Astronómica (Marcelo Saavedra)
Centro de Investigaciones de Astronomía (CIDA) Observatorio Nacional Llano del Hato, Edo. Mérida
Desde el patio de mi casa (Astrofotografía, Rafael Pire)
Dirección de Hidrografía Nacional - Observatorio Naval Cagigal
El Universo y sus Maravillas (José F. Ravelo)
Grupo Universitario de Investigaciones Astronómicas de la Universidad Simón Bolívar (GUIA)
Introducción a la Astronomía (Aquiles Rodríguez)
Liga Iberoamericana de Astronomía (LIADA)
Links Meteorológicos (de Luis Mujica)
MetVen (La Página de Meteoros de Venezuela)
Observatorio ARVAL
Observatorio Rofh (Franz Hernández)
Observatorio Tayabeixo Asociación Larense de Astronomía (ALDA)
Página de Ricardo A. Martinez
Prof. Gregorio Drayer, MEng
Proyecto CARIACO
Red de Estaciones Meteorológicas YV5FIH (de Raúl Padrón)
S3TI@V3N3ZU3L4 (Grupo Venezuela en SETI@home)
Sociedad Mundial del Futuro Venezuela (SMF Venezuela)
Sociedad Universitaria de Astronomía (SUNA)



Observatorio ARVAL - Astro Links fue actualizada en (was updated on): Julio (July) 3 '09

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